(Pursh) Torr. & Gray
Tolmiea menziesii has hairy, five to seven-lobed, toothed leaves and a capsule fruit containing spiny seeds
It bears many small flowers in a loose raceme. Each flower consists of a tubular purple-green to brown-green calyx and four linear or subulate (awl-shaped) red-brown petals, about twice the length of the sepals.
It has unusual reproductive habits. It grows plantlets from the petiole near the base of each leaf. The plantlets drop off, fall in the soil, and take root there. It will also reproduce by rhizomes and by seeds.
The plant was formerly considered to be the only member of a monotypic genus until diploid populations (due to autopolyploidy) were split off as a separate species T. diplomenziesii from the tetraploid populations.
- Sunset Western Garden Book, 1995:606–607
- "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (XLS) on 2015-02-25. Retrieved 2014-10-17.
- Yarbrough, J. A. (1936). The foliar embryos of Tolmiea menziesii. American Journal of Botany 23(1) 16-20.
- "Flora of North America". eFloras.org. Retrieved 2014-06-03.
- Soltis, D. E. and B. A. Bohm. (1986). Flavonoid chemistry of diploid and tetraploid cytotypes of Tolmiea menziesii (Saxifragaceae). Systemic Botany 11(1) 20-25.
- Las Pilitas Horticulture database: Tolmiea menziesii (Piggyback plant)
- Jepson Manual Treatment of Tolmiea menziesii
- USDA Plants Profile for Tolmiea menziesii (piggyback plant)
- Video and commentary on T. menziesii in the wild.]
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